Automatic phonograph-stop



A. C. HENDRICKS.

AUTOMATIC PHONDGRAPH STOP.

APPucATloN FILED JUNE l2. 1919.

Patented J an. 13,Y 1920.

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AUTOMATIC PHONOGRAPH STOP.

. APPLICATION ELLED 1uNE12. 1919.

1,327,955, Patented Jan.13,1920.

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E lume/wko@ I Nmap ADAM C. HENDRICKS, OF MARTINSBURG, WESTVIRGINIA..

AUTOMATIC VPHONOGRAjP-I-STOP.

Application filed .Tune 12, 1919. Serial No. 303,589,

To 'all whom it may concern: y

Be it known that l, ADAM C. Hnnnnions, a citizen of the United States,residing vat l Martinsburg, in the county of Berkeley and State ofl/Vestv Virginia, have invented certain new and useful Improvements inAutoi matic Phonograph-Stops; and l do declare the .following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to phonograph stops and more particularly to thetype designed for disk instruments `and provided with a friction brakefor the rotary disk-carrying table; and my principal object is togenerally simplify and improve upon the dericesshown by my U. S.Patent-s Nos. 1256317 of February 12, 1918, and 1277583 of September3rd, 1918.

1n carrying out the above end, a further object is to provide a hand`wheel for adjusting the stop according to the length of the record, andto obscure practically all other parts from View by said hand wheel,thus necessitating that fewer parts be nickelplated or otherwiseornamentally nished,

@ther objects are to provide a device which is compact, may beinexpensively manufactured and marketed, and may be easily adjusted forplaying selections of different lengths, the arrangement being such asto cause stoppage of the rotating table immediately after the last ofthe record has been played.

With the foregoing in View, the invention resides in novel constructionsand arrangements of parts hereinafter fully described and claimed, thedescriptive matter being supplemented by the accompanying: drawingswhich forma part of this application.

Figure l is a top plan view showing the application of my invention.

Figs. 2 and 3 are vertical sections on the planes indicated by the lines2-2 .and 3-3 of Fig.v l.

Fig. 4 is a horizontal section through the tone 'arm and the brakeflange of the instrument, showing a top plan View of the presentinvention with the hand wheel removed, this view disclosing the severalparts in the relations which they assume when the instrument is inoperation.

Fig. Vv5 is a view similar yto Fig. 4 but illustiating the relation ofparts whenthe record has been entirely played and thebrake is applied. i'y topy plan viewof the invention with both the hand wheel and thecontrol armfor the brake actuator removed.

Fig. 7 is a top plan viewof the attaching Specification of LettersPatent. j I Patented J an. 13,1920. i

base, and Fig. 8 is a perspective view-of such base.

ln the drawings above'briefly described, l have shown Va grapliophoneincluding the usual cabinet 1, rotatingA table 2` and horizontal,swinging tonearm 3, said table being provided withy the usual depending4brake flange 4, while the tone arm carries the reproducer aiid'needle 5in the well known manner.` l mount a vertical post fiXedly on thecabinet'l, provide a brake coacting with the flange `4, equip said brakewith an actuator mounted on said post, control the move inentof saidactuator by the swinging ofthe arm 3, and `provide a hand wheel mountedon saidv post 'over said actuator for adjusting the device according tothe length of the record, and although l might construct a device ofthis general character in a great num' beil of ways, I prefer theconstruction `specifically described below.

A horizontal, preferably circular base 6 is i attached by two screws 7and 8 to the cabinet 1 or to any other suitable support, being passedthrough anA eccentric opening 7 in the base and forming a pivot uponwhich said base may swingfor adjustment when it' is applied to theinstrument. The other screw 8 passes through an arcuate slot 8 in alateral ear9 with 'which the baseis pro-y vided, and this screw servesto clamp VVthe base against shifting after it has once vbeen adjusted.The base G is provided withk a -re-'` cess in its upper side which is'preferably formed by constructing` a vertical annular,`

flange 10 around the ec ge of said base, and rising centrally withinsaid recess, isa vertical post 1l. A brake is provided brake preferablyconsisting of a friction shoel 12 andan arm '13 carrying said shoe,

said arm being pivoted at 14 'to a preferably fertile abi@ 2, saidcircular brake actuator 15 which is pivotally Y mounted on the post 11and rests on the base G. For properly adjusting the brake to vthe4flange 4, the arin 13 may be moved around the pivot 14 and then .heldin-adj-usted'posito normally prevent application of the brake,

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but the moment the end of the selection is reached, the shoe and armallow a coiled .s ring 21 to come into la to rock the P e P .V

actuator and brake in a manner to apply the shoe 12eas seen in Fig. 5.The arm 19 is preferably mounted in opposed slots 22 formed in the upperedge of an annular ange 23, which rises from the actuator 15, and inmost cases, I will provide said arm with a slot 23 through which thepost 11 rises.

rllhe outer end of the arm 19 forms a preferably curved track 24: uponwhich the shoe 20 travels when the instrument is playing, but said armis adjustable with respect to said shoe, in order that the latter may besuddenly received in a notch 25 at the inner end of the track, when theend of the selection is reached. When this relation of parts occurs asseen in Fig. 5, the spring 21 acts to apply the brake and bring thetable 2 to a standstill. @ne wall 26 of the notch 25 is preferablybeveled, and the track 241 is provided with a pivoted, spring pressedextension 27 which extends normally beyond said beveled notch wall.Wvhen the tone arm is swung by hand to starting position, the shoe 20pushes against the track extension 27, swings the latter against thetension of its spring 28, and then rides along the bevel 26 onto thetrack 2li for further operation. r1`his movement of course releases thebrake. 4

For adjusting the arm 19, 1 provide a hand wheel 29 which is rotatablymounted upon the upper end of the post 11, and this post may well beprovided with a nut 30 for holding all parts against removal therefrom,and I preferably provide a metal washer 31 and a yielding` washer 32between said nut and wheel 29, to frictionally hold the latter in anyposition to which it may be adjusted. 1n most forms of the invention, 1intend to employ an eccentric 33 on the lower side of the wheel 29 andan eccentric strap 34 receiving said eccentric and pivoted at 35 to thearm 19. 1t will thus be seen that by rotating the hand wheel, the arm 19may be shifted inwardly or outwardly to adjust the device for operationat the proper time. The wheel 29 preferably carries a scale or the like36 cooperating with an indicator 37, and this indicator may well besecured in a projecting lug on the actuator 15, by means of a screw 38.For proper adjustment for stopping the device at the end of any record,it may be ascertained at which point on vthe scale 36, the indicator 37is then located, and by making the proper notation on the record, thestop device may be set at that particular point each time the record isto be played. lt will thus be seen that the brake may be 'made to comeinto play exactly at the proper time.

lt will be observed that the hand Wheel 29 covers and obscures from viewall parts except the outer end of the arm 19, the shoe 20, and a smallpart of the arm 13. 1t is thus necessary that only a few parts beornamentally finished by any method such as nickel-plating, andconsequently the expense of manufacture is greatlyv reduced. Fuithermore, practically all parts are 'of such formation as to permitconstruction thereof by stamping or die casting, and either 0f thesemethods is a great asset in manufacture. By die casting the hand wheel29 for instance, the trouble and expense of otherwise forming itsserrated edge, machining its upper surface, and forming the scale 36, iseliminated. This wheel is by prefer! ence provided with an opening 39through which the screws 8, 16 and 38 are accessible, and by this novelfeature, although the several sectional parts of the device are hiddenfrom view by the wheel in question, the screws employed are accessiblefor making any necessary adjustments.

rilhe device is simple and compact, may be easily and inexpensivelymanufactured and marketed, and will be highly eliicientl and desirablein every way, and since probably the best results may be obtained fromthe details disclosed, they may well be followed. 1 wish it understood,however, that within the scope of the invention as claimed, the devicemay be embodied in numerous other forms.

ll claim:

1. In a graphophone stop for disk instruw ments, post and means forrigidly mounting it, a brake for the disk 'able of the instrument, saidbrake having a spring operated actuator pivotally mounted on said post,means controlled by movement of the tone arm for holding said actuatoragainst movement until the record has been entirely played, and a handwheel mounted on said post for adjusting said holding means according tothe length of the record, said hand wheel extending overl andsubstantially obscuring said actuator.

2. 1n a graphophone stop for disk instruments, a post and means forrigidly mounting it, a brake for the disk table of the instrument, saidbrake having an actuator pivotally mounted on said post, a lateral armextending from said actuator and slidably carried thereby, means adaptedfor mount ing on the sound arm of the instrument for holding theaforesaid arm against movement until the record has been entirelyvplayed, andl a hand vwheel `mountedhon said' the aforesaid arm againstmovement untily were@ post -,over said actuator for adjusting said armaccording to the length of the record. 3. In a graphophone stop for diskinstrumentsa post and means for rigidly mounting it, a brake for thedisktable of the in strument,A said lbrake having an actuator pivotallymountedl on said post, a lateral arm extending from said actuator andslidably carried thereby, the outer end of said arm forming a track, ashoe for mounting on the tone arm of the instrument, said shoe beingadapted to travel along said track and prevent movement of said armuntil the record has been entirely played, and a hand wheel mounted onsaid post over said brake actuator for sliding said arm to relativelyadjust Isaid track and shoe according to the length of the record.

4. In a graphophone stop for' disk instruments, a post and means forrigidly mounting it, a brake for the disk table of the instrument, saidbrake having an actuator pivotally mounted on said post, a lateral yarmextending from and slidablv carried by said` actuator, means adapted formountingon the tone arm of the instrument for holding the record hasbeen entirely played,'a hand wheel mounted on said post over said'actuator and having an eccentric on its lower side, and an eccentricstrap receivingrsaid eccentric and carried by said arm, wherebyl turningor' said hand wheel will adjust said arm according to the length of therecord.

5. In a graphophone stop for disk instruments, a post and means forrigidly mounting it, a brake for the disk table of the instrument, saidbrake having an actuator pivotally mounted on said post, said actuatorhaving an upstanding flange around said post provided in its upper edgewith opposed notches, an arm slidably received in said notches andhaving a slot through which said post extends, means adapted formounting on the tone arm of the instrument for holding said arm againstmovement until the record has been entirely played, a hand wheel mountedon said post over said actuator, and coacting means on said wheel andarm for adjusting the latter, according to the length of the record.

6. A structure as specified in claim 5, said coacting means being housedwithin said flange.

7. In a graphophone stop, a stopping member for the record drivingmeans, a pivotally mounted, spring-operated actuator for said stoppingdevice, a control arm extending from said actuator in a directiontransverse to its pivotal axis, the outer end of said control arm havinga track extending longitudinally of said arm, a shoe movable along saidtrack while the record is being played, said shoe and track preventingmovement of said arm and actuator while said shoe is in `engagement withsaid track, and means for sliding said arm longitudinally to adjust itsrelation with` said shoe according tothe length of the record.

8. In a graphophone stop vfor disk instruments, al brake `for the disktable ot the instrument, saidbrake having an actuator pivotally mountedforhorizontal movement and provided with a"late`ral`iarm whose outer endforms a track, a shoe adapted to be carried bythe sound arm of theinstrument, said shoe being adapted to travel on said track to preventoperation of said actuator until the record has been entirelyplayed,

said arm having anotch at one end ofthe track provided with a beveledside, said notch being adapted 'to receive said shoe tov ment, said basehaving in` its upper side a" 1 recess, a post rising from'said base insaid recess, a brake for the yrotary disk table having -anactuatormounted pivotally on said post and closing Vsaid recess, a spring insaidrecess for moving said actuator to operative position, an arm extending`from said actuator forho'lding it against the, tension of said spring,means adapted for mounting onthe tone arm of the instrument to hold saidarm against movement until the record has been entirely played, and ahand wheel mounted on said post over said actuator for adjusting saiilarm acco-rding to the length of the recor 10. A structure as specifiedin claim 9, said base having an opening to receive an attaching andpivot screw and having a lateral lug provided with an arcuate slot forthe reception of an'additional screw, whereby said base may be adjustedwhen applied to the instrument.

11. A structure as specified in claim 9, said base having an opening toreceive an attaching and pivot screw and having a lateral lug providedwith an arcuate sloti'or the reception of anadditional screw, wherebysaid base. may be adjusted when applied to the instrument, said handwheel having an opening through which said additional screw isaccessible when said hand wheel is properly set.

12. A structure as specifiedv in claim 1, said brake including an armand a screw adjustably securing it to said actuator, said hand wheelhaving an opening through which said screw is accessible when said wheelis properly set.

13. A structure as speciiied in claim l, to gether with an indicator, ascrew securing said indicator to said actuator, and a scale on said handWheel coacting With said indicator; said hand Wheel having an openingthrOugh which said screw is accessible when said Wheel is properly set.

1.4. In a graphophone stop for disk instruments, a base adapted forattachment to the instrument cabinet adjacent the record carrying table,said lease having in its upper side a recess, a fixed post rising fromsaid base Within said recess, a brake actuator pivotally mounted on saidpost and resting on said base, an adjustableJ brake carrying armextending from said brake actuator for stopping the aforesaid table,saidactuator having an upstanding annulariiange spaced around said postand provided With notches in its upper edge, a sliding arm received insaid notches and having a slot through which said post passes, the outerend of said arm forming a track and having a notch at the inner end ofsaid track, a shoe adapted for mounting on the tone arm of theinstrument to normally travel along said track and prevent operation ofsaid actuator until said shoe reaches said notch, a spring confined inthe recess of said base. for then operating said brake actuator to apply`*the brake, a hand wheel rotatably mounted on the upper end of saidpost and obscuring said base and actuator from view, and coacting meanson said sliding arm and said hand Wheel for adjusting the former fromthe latter to vary the relation of said shoe and notch.

l5. In a graphophone stop for disk instruments, a base, a springoperated brake actuator mounted on said base brake connected operativelywith said actuator, means controlled by the tone arm of the instrumentfor normally holding said actuator against operation, and a horizontalhand Wheel for adjusting said holding means accoi-ding to, the length ofthe record, said hand Wheel extending over said actuator andsubstantially obscuring the same :trom View.

16. In a graphophone stop for disk instruments, a base, a springoperated'brake actuator mounted on said base brake connected operativelyWithsaid actuator, a sliding arm carried by and extending laterally fromsaid actuator, means co-acting With said arm and adapted for mounting onthe tone arm of the instrument for holding said actuator againstoperation While the record is being played, a horizontal hand Wheelextending over said actuator, and coacting means on said Wheel and armfor adjusting the latter according to the length of the record.

In testimony whereof l have hereunto set my hand.

ADAM C. HENDRICIS.

